310 MR. BELL, HORZ CARCINOLOGICA ; 
A close examination of the specimen in the British Museum, described by Messrs. 
Adams and White as “ Iphis,” has fully confirmed the impression I had received from 
their figure that this is a true Arcania. Its general form is that of this genus, differing 
greatly from that of Iphis; and its resemblance to A. undecim-spinosa of De Haan is very 
close. In fact it scarcely differs excepting in the number of spines. 
ARCANIA SEPTEM-SPINOSA, mihi (Tas. XXXIV. fig. 7). Test& globulosä, pauló latiore 
quam longiore, tuberculatä, spinis septem tuberculatis armatä, laterali utrinque reli- 
quis longiore. 
Hab. ——? Mus. Brit. 
Approaching Iphis in form, particularly in the transverse diameter of the carapace a 
little exceeding the longitudinal, and being furnished with two lateral spines longer than 
the others. The spines in this species, as in Arc. tuberculata and Erinaceus, are them- 
selves tuberculated. The posterior pair of marginal spines, which are flattened, show this 
character in a very beautiful manner, as is seen in the figure (d). The anterior legs are 
slender, the arm slightly curved, covered with tubercles; the hand smooth, swollen at the 
proximal portion; the fingers very thin, curved, nearly as long as the hand, toothed, and 
meeting only at the points. The remaining feet are wanting in the specimen, excepting 
one, and the rest have been added in outline in the figure, from the nearly allied species. 
Length of carapace 0*4 in. | 
ARCANIA TUBERCULATA, mihi (Tas. XXXIV. fig. 8). "Testà paulo longiore quam latiore, 
omnind tuberculatä, margine spinis novem tuberculatis instructo; brachiis granu- 
latis, manibus lævibus. 
Hab. ad ins. Borneo. Mus. Brit. 
Carapace subglobose, covered with various-sized tubercles; at the lateral and posterior 
margin there are nine spines occupying the same situations as those in the larger species, 
and obviously replacing them ; these spines are themselves tuberculated. The whole of 
. the under surface is granulated, as is the arm ; the hand quite smooth. 
Length of carapace 0*4 in. 
ARCANIA GRACILIPES, mihi (Tas. XXXIV. fig. 9). Testa granuloså, tuberculis quindecim 
suprà, et tribus ad marginem posteriorem instructà ; pedibus anticis tenuissimis. 
Hab. ad ins. Borneo. Mus. Brit. ; 
The whole carapace is granulated ; there are fifteen distinct tubercles on the upper part 
and sides, and three on the posterior margin. The anterior feet are extremely slender, 
the fingers as long as the hand, and meeting only at the points. 
Length of the carapace 0:3 in. | 
ARCANIA LEVIMANA, mihi (Tas. XXXIV. fig. 10). Testa granulata, tuberculis nume- 
rosis distinctis, ad marginem spinis novem simplicibus armatá; manibus glabris. 
Hab. ad insulas Philippinas. Mus, Brit. 
